Area Code 9788 – Kunisaki, Oita

Overview of Area Code 9788

Area code 9788 is a geographic National Destination Code (NDC) within the Japanese numbering plan, assigned to the Kunisaki region in Oita Prefecture, located on the northeastern coast of Kyushu Island. This code is part of the larger Oita numbering area, which is administered by the Ministry of Internal Affairs and Communications (MIC) and operated by Nippon Telegraph and Telephone West (NTT West). The 9788 code serves the city of Kunisaki and its surrounding areas, including the former towns of Kunimi, Aki, and Musashi, which merged to form the current city in 2006. The region is known for its rural landscape, historical sites, and the Kunisaki Peninsula, a UNESCO-recognized area for its ancient mountain worship and Buddhist heritage.

Dialing Formats

When calling a landline in Kunisaki from within Japan, you must dial the area code followed by the subscriber number. The full national number is 0978-XX-XXXX, where 0978 is the area code and the subscriber number is typically 6 digits long. For example, a local number might be 0978-88-1234. When dialing from a mobile phone within Japan, the same format applies: 0978-88-1234. For international callers, the country code for Japan is +81, and the leading zero of the area code is dropped. Therefore, to call the same number from abroad, you would dial +81 978-88-1234. Note that the area code 9788 is sometimes written as 0978-8X-XXXX, but the standard format is 0978-XX-XXXX.

Geographic Coverage and Numbering

The 9788 area code is a geographic code, meaning it is tied to a specific physical location. It is part of the Oita numbering plan area, which also includes codes such as 975 (Oita City) and 977 (Nakatsu). The Kunisaki area code is used exclusively for fixed-line services, including PSTN and some VoIP services that are assigned geographic numbers. There are no overlay codes in this region, so the 0978 area code is unique to the Kunisaki area. The subscriber numbers are 6 digits long, allowing for a maximum of 1,000,000 numbers, though the actual allocation is smaller due to demand.

Caller Instructions

For local callers within the Kunisaki area, it is possible to dial only the 6-digit subscriber number without the area code, as the call is within the same charging group. However, for clarity and to avoid misdialing, it is recommended to always include the area code. For callers from other parts of Japan, you must dial 0978 followed by the subscriber number. For international callers, always use the +81 country code and omit the leading zero. For example, a call to 0978-88-1234 would be dialed as +81 978-88-1234 from overseas. Be aware that some VoIP services may require the full national number even for local calls, so it is best to check with your service provider.